Manage Multiple Docker Containers with a Single Command

#!/bin/bash

# --- Configuration ---
# List of container names to manage. Can be full names or partial matches.
CONTAINER_NAMES=("my-webapp-container" "my-db-container" "my-cache-container")
# Or if you have a common prefix, you can find them dynamically:
# CONTAINER_PREFIX="my-app-"
# CONTAINER_NAMES=($(docker ps -a --format "{{.Names}}" | grep "^${CONTAINER_PREFIX}"))

# --- Script Logic ---

ACTION="$1"

if [ -z "$ACTION" ]; then
  echo "Usage: $0 {start|stop|restart|status}" >&2
  exit 1
fi

if [ ${#CONTAINER_NAMES[@]} -eq 0 ]; then
  echo "No containers configured to manage. Exiting." >&2
  exit 1
fi

echo "Performing $ACTION on the following Docker containers:"
for name in "${CONTAINER_NAMES[@]}"; do
  echo "- $name"
done

for CONTAINER in "${CONTAINER_NAMES[@]}"; do
  case "$ACTION" in
    start)
      echo "Starting $CONTAINER..."
      docker start "$CONTAINER"
      ;;
    stop)
      echo "Stopping $CONTAINER..."
      docker stop "$CONTAINER"
      ;;
    restart)
      echo "Restarting $CONTAINER..."
      docker restart "$CONTAINER"
      ;;
    status)
      echo "Status of $CONTAINER:"
      docker inspect --format='{{.State.Status}}' "$CONTAINER" 2>/dev/null || echo "Not found"
      ;;
    *)
      echo "Invalid action: $ACTION" >&2
      echo "Usage: $0 {start|stop|restart|status}" >&2
      exit 1
      ;;
  esac
done

echo "All requested actions completed."